US3864249A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Separator
Assignee: Heritage Industries Inc
•
Filing: 1973-03-14
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Granted: 1975-02-04
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Expires: 1993-03-14
Abstract
Abstract A separator for effecting separation of solid materials from liquids which comprises means for directing a mixture of a solid material and a liquid into contact with a filter screen and means for subjecting the filter screen to acoustic pressure waves, the arrangement being such that in operation liquid passes through the filter screen and solid materials are retained thereon and travel along the filter screen.
Inventors
- 👤 James William Wallis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:50
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/20; B01D35/28; B07; B07B; B07B2230/00; B07B2230/04
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
103 words
A SEPARATOR FOR EFFECTING SEPARATION OF SOLID MATERIALS FROM LIQUIDS WHICH COMPRISES A FILTER SCREEN, MEANS FOR DIRECTING A MIXTURE OF A SOLID MATERIAL AND A LIQUID INTO CONTACT WITH THE FILTER SCREEN AND MEANS FOR SUBJECTING THE FILTER SCREEN TO ACOUSTIC PRESSURE WAVES COMPRISING AN ACOUSTIC PRESSURE WAVE TRANSDUCER ARRANGED CLOSE TO BUT NOT TOUCHING THE FILTER SCREEN SO THAT IN OPERATION LIQUID PASSING THROUGH THE SCREEN COUPLES ACOUSTIC PRESSURE WAVES FROM THE TRANSDUCER TO THE SCREEN, THE ARRANGEMENT BEING SUCH THAT IN OPERATION LIQUID PASSES THROUGH THE FILTER SCREEN AND SOLID MATERIALS ARE RETAINED THEREON AND TRAVEL ALONG THE FILTER SCREEN.
Claim 2
Dependent Claim
103 words
A SEPARATOR FOR EFFECTING SEPARATION OF SOLID MATERIALS FROM LIQUIDS WHICH COMPRISES A FILTER SCREEN, MEANS FOR DIRECTING A MIXTURE OF A SOLID MATERIAL AND A LIQUID INTO CONTACT WITH THE FILTER SCREEN AND MEANS FOR SUBJECTING THE FILTER SCREEN TO ACOUSTIC PRESSURE WAVES COMPRISING AN ACOUSTIC PRESSURE WAVE TRANSDUCER ARRANGED CLOSE TO BUT NOT TOUCHING THE FILTER SCREEN SO THAT IN OPERATION LIQUID PASSING THROUGH THE SCREEN COUPLES ACOUSTIC PRESSURE WAVES FROM THE TRANSDUCER TO THE SCREEN, THE ARRANGEMENT BEING SUCH THAT IN OPERATION LIQUID PASSES THROUGH THE FILTER SCREEN AND SOLID MATERIALS ARE RETAINED THEREON AND TRAVEL ALONG THE FILTER SCREEN.
Claim 3
Dependent Claim
29 words
A separator according to claim 1, in which the transducer is positioned approximately at the point where in operation the bulk of the liquid is passing through the screen.
Claim 4
Dependent Claim
15 words
A separator according to claim 1 in which the filter screen has a planar surface.
Claim 5
Dependent Claim
19 words
A separator according to claim 3 in which the filter screen is arranged at an angle to the horizontal.
Claim 6
Dependent Claim
22 words
A separator according to claim 4, in which the angle of the screen to the horizontal is from 30* to 85* .
Claim 7
Dependent Claim
22 words
A separator according to claim 4, in which the angle of the screen to the horizontal is from 35* to 45* .
Claim 8
Dependent Claim
22 words
A separator according to claim 1, in which the filter screen has a mesh size of from 20 to 360 BSS mesh.
Claim 9
Dependent Claim
35 words
A separator according to claim 1, that is provided with a header box having an adjustable orifice through which in operation the mixture of solid material and liquid is directed on to the filter screen.
Claim 10
Dependent Claim
38 words
A separator according to claim 8, in which the orifice of the header box is arranged so that in operation the mixture of solid material and liquid is provided with a component of velocity parallel to the screen.
Claim 11
Dependent Claim
32 words
A separator according to claim 1, in which means are provided to vary the angle of contact of the flow of the mixture of solid material and liquid with the filter screen.
Claim 12
Dependent Claim
18 words
A separator according to claim 10, which is provided with a header box pivotable about a horizontal axis.
Claim 13
Dependent Claim
25 words
A separator according to claim 1 in which there is provided means for breaking the surface tension of the liquid flowing through the filter screen.
Claim 14
Dependent Claim
23 words
A separator according to claim 12, in which the surface tension breaking means comprises a plurality of angle pieces lying beneath the screen.
Claim 15
Dependent Claim
26 words
A separator according to claim 1, in which there is provided means for introducing fresh liquid into the mixture before it is discharged on the screen.
Claim 16
Dependent Claim
93 words
A process for effecting separation of solid materials from liquids which comprises directing a mixture of a solid material and a liquid into contact with a filter screen and subjecting the filter screen to acoustic pressure waves genErated by an acoustic pressure wave transducer arranged close to but not touching the filter screen so that in operation liquid passing through the screen couples acoustic pressure waves from the transducer to the screen, the arrangement being such that liquid passes through the screen and solid material is retained thereon and travels along the screen.
Claim 17
Dependent Claim
93 words
A process for effecting separation of solid materials from liquids which comprises directing a mixture of a solid material and a liquid into contact with a filter screen and subjecting the filter screen to acoustic pressure waves genErated by an acoustic pressure wave transducer arranged close to but not touching the filter screen so that in operation liquid passing through the screen couples acoustic pressure waves from the transducer to the screen, the arrangement being such that liquid passes through the screen and solid material is retained thereon and travels along the screen.
Claim 18
Dependent Claim
22 words
A process according to claim 15, in which there is imparted to the mixture a component of velocity parallel to the screen.
Claim 19
Dependent Claim
42 words
A process according to claim 15, in which the mixture is projecting along the screen with a velocity sufficient to maintain a part of the screen substantially clear of solid material whilst permitting liquid to pass through that part of the screen.
Claim 20
Dependent Claim
31 words
A process according to claim 17 in which the mixture is directed into contact with the filter screen under a fluid pressure of from 15 to 30 lbs. per sq. inch.
Claim 21
Dependent Claim
25 words
A process according to claim 15 in which the acoustic pressure waves are ultrasonic pressures waves and the transducer is an ultrasonic pressure wave transducer.
Claim 22
Dependent Claim
101 words
A separator for effecting separation of solid materials from liquids which comprises a filter screen, means for directing a mixture of solid material and a liquid into contact with the filter screen, and an ultrasonic transducer for subjecting the filter screen to acoustic pressure waves, said transducer being arranged close to but not touching the filter screen so that in operation liquid passing through the screen couples ultrasonic pressure waves from the transducer to the screen, the arrangement being such that in operation liquid passes through the filter screen and solid materials are retained thereon and travel along the filter screen.
Claim 23
Dependent Claim
101 words
A separator for effecting separation of solid materials from liquids which comprises a filter screen, means for directing a mixture of solid material and a liquid into contact with the filter screen, and an ultrasonic transducer for subjecting the filter screen to acoustic pressure waves, said transducer being arranged close to but not touching the filter screen so that in operation liquid passing through the screen couples ultrasonic pressure waves from the transducer to the screen, the arrangement being such that in operation liquid passes through the filter screen and solid materials are retained thereon and travel along the filter screen.
Claim 24
Dependent Claim
26 words
A separator according to claim 20, in which the ultrasonic transducer is arranged at a distance of from 1/4 inch to 1 inch from the screen.
Claim 25
Dependent Claim
19 words
A separator according to claim 20, in which a reservoir is provided around the transducer to retain cooling liquid.
References Cited (Backward Citations)
US2183896A
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US2799398A
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US3707230A
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US3766059A
Cited
US3720306A
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US3713540A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |